Malicious PDF — malware analysis report

Static analysis result for SHA-256 accfa19672d9ff92…

MALICIOUS

PDF

47.2 KB Created: 2020-08-27 12:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5922f47fdc48d888ad910f154493b8d2 SHA-1: 495a89eb71948666e6d6d89d0655a680446b965a SHA-256: accfa19672d9ff92e6728d30d3122523929ecbe77a4f76cb2f00e996ee8a3187
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.club/pify?keyword=the+program+book+pdf'. Additionally, it exhibits characteristics of a PDF link farm, with numerous external links, many of which are hosted on Shopify but point to potentially unrelated PDF files. The document body, though heavily obfuscated, contains the same redirector URL, reinforcing the malicious intent. No scripts were extracted, limiting the analysis of direct execution behavior.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.club/pify?keyword=the+program+book+pdf
    • http://subik.paintmypottery.net/uploads/1/3/1/6/131606490/4898464.pdf
    • http://rubilo.agbio-inc.com/uploads/1/3/2/6/132683130/316ed0b4faced.pdf
    • http://files.chestertonantiquemall.com/uploads/1/3/1/1/131163601/kumaluvor_fujewemaxo.pdf
    • http://files.bandgfrenchies.com/uploads/1/3/1/4/131437978/d7499d5e.pdf
    • http://jigilunib.laurengoldsteinart.com/uploads/1/3/0/7/130776659/6134382.pdf
    • https://cdn.shopify.com/s/files/1/0436/3668/7008/files/density_plot_ggplot2.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/21704740851.pdf
    • https://cdn.shopify.com/s/files/1/0439/5125/9803/files/fundamentals_of_biochemistry_lehninger.pdf
    • https://cdn.shopify.com/s/files/1/0431/7410/1160/files/lomopovujebojemifeferumud.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27360052690.pdf
    • https://cdn.shopify.com/s/files/1/0431/7442/8827/files/lurewetebaxabo.pdf
    • https://cdn.shopify.com/s/files/1/0428/4933/7500/files/95426232466.pdf
    • https://cdn.shopify.com/s/files/1/0437/7391/9393/files/61547220528.pdf
    • https://cdn.shopify.com/s/files/1/0435/1839/4523/files/mopuka.pdf
    • https://cdn.shopify.com/s/files/1/0437/8614/1847/files/between_shades_of_grey_ruta_sepetys.pdf
    • https://cdn.shopify.com/s/files/1/0433/5557/0341/files/43431191240.pdf
    • https://cdn.shopify.com/s/files/1/0433/9364/6753/files/41953597679.pdf
    • https://cdn.shopify.com/s/files/1/0430/9418/0001/files/27459724966.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007946.bin
817a02b14109bc16bad4d3b107c8110bd6a2796d11ddceba9a414aad33f79302
pdf-font-stream PDF embedded font (sfnt) at offset 0x7946 5400 bytes
font_01_sfnt_off00008b85.bin
0d7fe387ce9641b64e6325f3956a2f6109aba130b2c9cb0cbc31aa9f6cca3128
pdf-font-stream PDF embedded font (sfnt) at offset 0x8B85 10672 bytes